Bottom part of casing for electrical device



FIG. 1 is a top, front perspective view of a bottom part of casing for electrical device showing my new design;

FIG. 2 is a bottom, left perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front view thereof, the rear view being the same; and,

FIG. 6 is a left side view thereof, the right side view being the same.

The portions of the drawings illustrated in broken lines represent a boundary of the design and form no part of the claimed design. 

CLAIM The ornamental design for a bottom part of casing for electrical device, as shown and described. 